| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.85 | 4.09 | -0.24 |
| Feb | 3.37 | 3.54 | -0.17 |
| Mar | 4.42 | 4.53 | -0.11 |
| Apr | 4.04 | 4.05 | -0.01 |
| May | 3.45 | 3.72 | -0.27 |
| Jun | 4.05 | 4.22 | -0.17 |
| Jul | 3.87 | 4.03 | -0.16 |
| Aug | 4.35 | 4.48 | -0.13 |
| Sep | 3.77 | 3.85 | -0.08 |
| Oct | 3.26 | 3.45 | -0.19 |
| Nov | 3.59 | 3.63 | -0.04 |
| Dec | 4.18 | 4.33 | -0.15 |
46.20 | 47.92 | -1.72 |